;;;System definition cut away.
The following derivations will be built:
/gnu/store/hap769hzynkhcqin9ynvjnsf4rdgphyv-system.drv
/gnu/store/g285cghja69w8lamlir2w1w1w0axa35a-grub.cfg.drv
/gnu/store/3x9qz66gpqisa18hzjbjj6rbm6cxfsq7-slim.cfg.drv
/gnu/store/f9adqf84wq70lakxfmh4f4cn6xwhszdb-dmd.conf.drv
/gnu/store/45fhs53hdy98j10h2bnm4ilqy70sg96i-boot.drv
ERROR: In procedure primitive-load:
ERROR: In procedure scm_lreadr: /gnu/store/6bhrflbps4mav5yv5mas6fazcb59734f-slim.cfg-builder:1:159: Unknown # object: #\<
builder for `/gnu/store/3x9qz66gpqisa18hzjbjj6rbm6cxfsq7-slim.cfg.drv' failed with exit code 1
cannot build derivation `/gnu/store/f9adqf84wq70lakxfmh4f4cn6xwhszdb-dmd.conf.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/45fhs53hdy98j10h2bnm4ilqy70sg96i-boot.drv': 1 dependencies couldn't be built
cannot build derivation `/gnu/store/hap769hzynkhcqin9ynvjnsf4rdgphyv-system.drv': 1 dependencies couldn't be built
guix system: error: build failed: build of `/gnu/store/hap769hzynkhcqin9ynvjnsf4rdgphyv-system.drv' failed
Please, help me set screen resolution on my laptop.Thanks in advance.
Dmitry